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Spatial distribution and ecological risk assessment of heavy metals in surface sediments from a typical plateau lake wetland, China

Author

Listed:
  • Bai, Junhong
  • Cui, Baoshan
  • Chen, Bin
  • Zhang, Kejiang
  • Deng, Wei
  • Gao, Haifeng
  • Xiao, Rong

Abstract

Surface sediment (0–15cm) samples were collected from 31 different grid points throughout the Yilong Lake in April 2004. Samples were subjected to a total digestion technique and analyzed for As, Cd, Cr, Pb, Ni, Cu, and Zn in order to study spatial distribution characteristics based on Kriging method and assess their ecological risks posed by these heavy metals. Results showed that the mean concentrations of these heavy metals were lower than potential effect levels. Patches of higher heavy metal concentrations occurred in the inflow area of the Cheng River and northeast area nearby the road and railway. The higher concentrations of As and Cr also appeared in the east area (lake outlet), while the patches of lower concentrations were uniformly distributed at the southwest corner between Luosewan and Xiaoguoxi. The heavy metal loads such as As, Cd and Pb might come from the common sources due to industrial sewage and traffic pollution, while higher concentrations of Ni, Cr, and Zn in these sediments were dominated by parent rocks. However, Cu originated from both sources. Sediments with respect to As, Cd and Cu were grouped below the effect range low (ERL) at all sites, and with respect to Cr and Pb were grouped into the range from ERL to the effect range median (ERM) at more than 50% of sampling sites. The mean heavy metal toxic units in the Yilong Lake decreased following the order Pb>Cr>As>Ni>Zn>Cd>Cu, with higher contributions to the sum of toxic units of Pb, Cr and As.

Suggested Citation

  • Bai, Junhong & Cui, Baoshan & Chen, Bin & Zhang, Kejiang & Deng, Wei & Gao, Haifeng & Xiao, Rong, 2011. "Spatial distribution and ecological risk assessment of heavy metals in surface sediments from a typical plateau lake wetland, China," Ecological Modelling, Elsevier, vol. 222(2), pages 301-306.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:2:p:301-306
    DOI: 10.1016/j.ecolmodel.2009.12.002
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    Citations

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    Cited by:

    1. Tang, P.Z. & Liu, J.Z. & Lu, H.W. & Wang, Z. & He, L., 2017. "Information-based Network Environ Analysis for Ecological Risk Assessment of heavy metals in soils," Ecological Modelling, Elsevier, vol. 344(C), pages 17-28.
    2. Xuedong Yan & Fan Zhang & Dan Gao & Chen Zeng & Wang Xiang & Man Zhang, 2013. "Accumulations of Heavy Metals in Roadside Soils Close to Zhaling, Eling and Nam Co Lakes in the Tibetan Plateau," IJERPH, MDPI, vol. 10(6), pages 1-17, June.
    3. Xiahui Wang & Nan Wei & Guohua Ji & Ruiping Liu & Guoxin Huang & Hongzhen Zhang, 2022. "Assessment of the Driving Pollution Factors of Soil Environmental Quality Based on China’s Risk Control Standard: Multiple Bigdata-Based Approaches with Intensive Sampling," IJERPH, MDPI, vol. 19(19), pages 1-15, September.
    4. Qingping Liu & Guannan Liu & Wei Chen & Guoliang Chen, 2021. "HMCA-Contour: A Visual Basic Program Based on Surfer Automation for Soil Heavy Metal Spatial Distribution and Contamination Assessment Mapping," Sustainability, MDPI, vol. 13(4), pages 1-14, February.
    5. Yang Guan & Chaofeng Shao & Qingbao Gu & Meiting Ju & Qian Zhang, 2015. "Method for Assessing the Integrated Risk of Soil Pollution in Industrial and Mining Gathering Areas," IJERPH, MDPI, vol. 12(11), pages 1-21, November.
    6. Valentina Gallina & Silvia Torresan & Alex Zabeo & Andrea Critto & Thomas Glade & Antonio Marcomini, 2020. "A Multi-Risk Methodology for the Assessment of Climate Change Impacts in Coastal Zones," Sustainability, MDPI, vol. 12(9), pages 1-28, May.
    7. Ying Wang & Di Zhang & Zhenyao Shen & Chenghong Feng & Jing Chen, 2013. "Revealing Sources and Distribution Changes of Dissolved Organic Matter (DOM) in Pore Water of Sediment from the Yangtze Estuary," PLOS ONE, Public Library of Science, vol. 8(10), pages 1-10, October.
    8. Xia Li & Wanqing Chi & Hua Tian & Yongqiang Zhang & Zichen Zhu, 2019. "Probabilistic ecological risk assessment of heavy metals in western Laizhou Bay, Shandong Province, China," PLOS ONE, Public Library of Science, vol. 14(3), pages 1-16, March.
    9. Ayesha Ayub & Sheikh Saeed Ahmad, 2020. "Seasonal Assessment of Groundwater Contamination in Coal Mining Areas of Balochistan," Sustainability, MDPI, vol. 12(17), pages 1-21, August.
    10. Yong Niu & Wei Jiao & Hui Yu & Yuan Niu & Yong Pang & Xiangyang Xu & Xiaochun Guo, 2015. "Spatial Evaluation of Heavy Metals Concentrations in the Surface Sediment of Taihu Lake," IJERPH, MDPI, vol. 12(12), pages 1-12, November.

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